diff --git a/lexers/embedded/r.xml b/lexers/embedded/r.xml
index 6dbfcba7b..1e44ca4a9 100644
--- a/lexers/embedded/r.xml
+++ b/lexers/embedded/r.xml
@@ -17,6 +17,7 @@
     <mime_type>text/x-R</mime_type>
     <mime_type>text/x-r-history</mime_type>
     <mime_type>text/x-r-profile</mime_type>
+    <priority>0.1</priority> <!-- higher priority than Rebol -->
   </config>
   <rules>
     <state name="numbers">